How to call rigify operators?
I think you can use Python's exec() or eval() to do this, if the operator is already registered
import bpy
rig_id = &quot;i8fj1rbnfbd76bf5&quot;
op = eval(&quot;bpy.ops.pose.rigify_limb_ik2fk_&quot; + rig_id)
# or with exec
# exec(&quot;op = bpy.ops.pose.rigify_limb_ik2fk_&quot; + rig_id)

# now you can call op
op(prop_bone='upper_arm_parent.L') # and rest of arguments